Azo dyestuffs containing metals and process of making same



Patented Dec. 23, 1930 UNITED STATES,

PATENT OFFICE FRITZ 'STRAUB AND WALTER .ANDERAU, OF BASEL, SWITZERLAND, ASSIGNORS TO SOCIETY OF CHEMICAL INDUSTRY IN BASLE, OF BASEL, SWITZERLAND AZO v.DYIES'JTUFL ES CONTAINING .METALS AND PROCESS OF MAKING-SAME No Drawing. Application filed Angus-1:26, 1929, Serial No. 388,614, and in Switzerland September 8, 1928.

OH p @som with aromatic diam-compounds.

If su'lfonated or 'unsulfonated diazo-components are used which contain lake-forming groups the dyestuffs may be treated with an agent which yields metal.

The azo-dyestuifs may be made in substance or on a suitable substratum.

As suitable metals 'for the manufacture of products containing metal may be (named all those which are capable of forming complex compounds, such as chromium, copper, iron, manganese, tin, aluminum, nickel, cobalt, titanium, cerium, uranium, or the like, 7

The following examples illustrate the invention, the parts being by weight Example 1 472 :parts of 15.: 5'-dihydroXy-'7 7-disulfodinaphthazine are parts of sodium carbonate in 500 parts of water and combined with the diazo-body from is; parts of -l-chloro-2-amino phenol-d-suldissolved together with V tonic acid. When coupling atan end the dyestufi is salted out. "It is dark powder, soluble in dilute acetic acid to a red-orange solution, in dilute alkalies to a blue solution and in concentrated sulfuric acid to a greenishblaok solution. Cotton is dyed in an alkaline bath containing Glaubers salt blue tints, which pass to fast grey-blue tints when afterwards treated with copper salts. j

: Ewample $2 Ewamplle 3 I 92 parts of the disazo-dyestufi" from 5 5- dihydro,Xy-7 7Q disulfo-l 2f 1' :2- dinaphthazine and diazotized L-chloro-Q- amino-l-phenol-6-sulfonic acid aredissolved in .2500. parts of water and the solution is mixed with one of chromium fluoride corresponding with parts ofCr O whereupon the mixture isboiled for 15 hours in a reflux apparatus. By'evaporation and precipitat'ion byadditi on of common salt, the

new chromium compounolmay be separated.

Then dry,.it is a dark powder, soluble in water and dilute alkalies toa green blue solution and in concentrated sulfuricacid to a brown-blacksolution. Cotton and'artifioia'l silk, such asvisc-ose silk, are dyed this dyestuff in a bath alkaline with sodium carbonate fast greengrey' tints and the like bath.

tints are obtained on wool and silk in an acid Example .4

In presence of sodium carbonate 472 parts of 5-dihydroXy-7 7-disulfo-1:2 1 2- dinaphthazine are coupled with the diazocompound from 44 parts of 4-nitro-2-aminophenol-6-sulfonic acid and when completely coupled the product is salted out. When dry, it is a blackpowderwhichdissolves in dilute acid to an orange solution in dilute alkalies to a green solution and in concentratedsulfuric acid to a blacklsh solution.

Cotton isdye'd bythis dyestufi" in an alkaline bath grey-green tints which by a subsequent treatment withcopper become fast greeng y v Ema mph 5' 90 parts ofthe disazo-dyestufi? of the fore-- going example are dissolved in. 3000 partsof hotwater and there .is' added a saturated solution of partsof Ic rystallizedcopper sulfate, whereupon the copper compoundis immediately formed. It v is separated by common salt and theseparated material is dried. It is aflgrey black powder, soluble in Water and vin'dilute alkalies to a dark green blue solution and in concentrated sulfuric acid to a blackish solution. "It dyes cotton in a bathalkalinewith sodium carbonate and containing Gl'a'ubers saltgreen-;

fluoride corresponding with 30 parts of v Gr Og. The Whole is then heated for 16 hours to boiling. By *evaporatiofi and salting out. the new chrornium'compound may be isolated." Whenfdry it is a dark powder soluble in; water and dilute alkalies to a green solution and in concentrated sulfuric acid to a brown-black'solution. Cotton and Viscose silk are dyed in an alkaline bath containing Glaubers salt "olive-green tints.

Wool and silk are dyedin an acid; like 3 tints. r

' Example '7 I Instead of the chromium fluoride used in Example .6 there is used a mixture of a soluti 0n of 25parts of crystallized-copper, sulfatesa nd a solution of chromiumflfiuori'de corresponding with125f-partsof Q1305} the .whole is heated in a refluX apparatus for 16. hours. By addition fof common saltythe complex compound is, caused to. separate.

When dry, itjis a darkpowder which dissolves in water-to a blue Violet solutionjjin I.

dilute 'alkalies to a bluesolution' and "in concentrated sulfuric acid to a blackish solution. Cotton is dyed by it in a bath alkaline with sodium carbonate and containing Glaubers salt greengrey tints.

' v 7 Example .8

12 parts of 5:-5-dihydro- Xy-7:7-disulf0 l:2:1:2-dinaphthazine are dissolved together with 4.- parts of calcined sodium carbonate in 200 parts of water and 10 parts of sodium bicarbonateare :added. The solution Y is mixed with the diazo-body from 11 parts] of aniline-tsulfonic acid and the mixture is kept at.. 6.8. C. until f'the diazo-ibodyfihas disappeared. if The dyestufiiisirsalted out.

Then dry, it'is a dark powder, soluble in. Water to 'a' red brown solution in caustic. soda: solution or dilute sodium carbonate "solution to a blue Violet solutionand in T concentrated sulfuric acid to a green solu tion, it d-yes silk and wool in an acid bath containingGlaubers salt redbrown tints.

' .E mdmple Instead of sulfanilic, acid;usedinltkample 8 there is here used the corresponding quan;

tity of thegdiazo-compoundfrom para-nitrati- 1l1ne and the rest of the procedure is as described 1n that example. ihere is obtained a blackish dyestufl? which dissolves in water;

to a' brown solution; in sodium carbonate solution to a blueiolet solution and in. r

dilute caustic soda solution to a blue-green solution. In'concentrated sulfuric acid it dlssolves to an ohve green solutlon. It dyes silk and wool in anacidbath brown tints and cotton in an alkaline bath containing Glaubers salt olive tints.

Example 10 Cotton ishandled in a solutioncontaining' per litre 12 :grams of .5 5-"-.dihydroxy-7.:.7"-

disulfo-I 5 2. :1: 2L dinaphthaZine, 5 grains of caustic soda solution 0530 per cent... stren and 1'5grams of Turkey :redloil. The dye stulf is developed without'drying by means of di'azotize'd 4-ch1oro-2-aminodiphenylether; i after soaping thegoods have a dark brown By adding :sodium.. hydrosulfite tothe dyeing.

padding bath the azine can be brought into the form ofhydroazine on the fibre. Inthis case the goods are hung for ashort time be. .fore the development. The dyeings thus obtained' are somewhat stronger than by the method of theprevious paragraph;

Fmampl'e :11 1

ers salt. j

partsof cotton are entered at 3040 Gftnd the bath is heated within hour- A dye-bath'is prepared with pa-rt'sof the dy estulTof-EXa-mple-I and30 parts oi Glaubpresence of copper sulfate.

Example 12 A dye-bath is prepared with 2 parts of the dyestuif of Example 4 and 30 parts of Glaubers salt. 100 parts of cotton are entered at 30-40" C., and the bath is heated within 7 hour to boiling. Dyeing is then continued for hour and the goods subsequently rinsed.

The goods are then handled for hour at -7 0 C. in a second bath which contains dissolved in it 1 part of chromium fluoride. 2%

Rinsing and drying follow. Greenish grey tints are obtained of excellent fastness.

.The result is similar if the dyeing is conducted in the presence of a chromium salt.

' Example 13 1 a For 100 parts of silk 23 parts of the dry dyestuft of Example 2 are dissolved in the quantity of waternecessary for the dyeing. To. this solution 5-8 partsof acetic acid are added and the goods are entered at 5060 (1, the bath being then gradually heated to C. and maintained at this temperature for 4 to 1 hour. The goods are then washed, brightened in the usual manner and dried. Silk is dyed fast grey tints.

Ecaample 14.

100 parts of well-boiled out or thoroughly wetted cotton are dyed in a bath comprising 2500 parts of water, to which have been added 2 parts of the dyestuffof Example 5, dissolved in 1015 times their weight of hot water. The goods areentered at 20-35 C. and the bath is heated to boiling in the course of hour; there are then added to the bath 2530 parts of Glaubers Sen te the goods are handled at the boiling temperature for 10-15 minutes, whereupon the bath is cooled to C. and the goods handled at this temperature for another hour; they are then washed and dried. The dyeing can also be conducted in a. feebly alkaline or feebly acid bath. There are obtained fast green grey tints. What we claim is 1. Process for the production of metalliferous azo-dyestuifs, consisting in combining with diazo-compounds containing lake-forming groups in ortho-position to the diazo grou the 5-:;5-dihydroXy-7 :7'--.disulfo- 1 :2 :1 :Q-dinaphthazinebf the formula HOaS and treating the products thus obtained with an agent which yields metal capable of forming lakes. 7

2. Process for the production of metalliferous azo-dyestuifs; consisting in combining with diazo-com'pounds containing lake-forming groups in ortho-position 'tothe diazoroup the 5 5 -dihydroxy-7 7 -disulfo- 1:2:1':2-dinaphthazine of the formula and treatingthe products thus obtained with an agent which yields metal of the atomic weight ranging between p48 and 65. 3. Process for the production of'metalliferous azo-dyestufis, consisting in combining with diam-compounds containing lakeforming groups in ortho-position to the diazo-group the 5 5-dihydroXy-7": 7"-disulfo-1z2 :1-:2-dinaphthazine of the formula HOaS and treating the products thus obtained with an agent which yields metal of the atomic weight ranging between 52 and 63.6. i

4. Process for the production of metalliferous' azo-dyestufi's, consisting in combining with ortho-hydroxy-diazo-compounds the 5: 5-dihydroXy-7 :7-disulfo-1:2 :1 2- dinaphthazine of the formula HOnS and treatingthe products thus obtained with 7 an agent which yields metal of the atomic weight ranging between '52 and ,5. Process for theproduction of azo-dyestuffs containing copper; consisting in combining with ortho-hydroxy-diazo-compounds the 5 5-dihydroXy-7 7-disulfo-l 2 1 2- dinaphthazine ot' the formula, 7

treating the products with an agent which yields copper.

6. As new products the inetallifjerous azodyestuffs obtained by combining with diazo-' 7 compounds containing lake-forming groups dinaphthazine of the formula 1 and treating the products thus obtained with 5 an agent which yields metal capableof torming lakes, which products form dark v to, blackish powders-which dissolve in waterand dilute alkalies to'blueto green-blue solutions, anddye fibers of animal and vegetable origin olive-green. and "green-grey to blue grey tints I c v 7. -As new products the metalliferous azodyestufisobtained by combining with dia'zocompounds containing lake-forming groups in ortho-positiontothe diazo group the 5 5-dihydroXy-7':"7-disulto-1 2: 1: 2- dinaphthazine of the formula I on Hogs

and treating the products thusobtained with an agent which yields metal, ofthe atomic weight ranging between 481and65, which products form dark 3 to blackish powders which dissolve in water and dilute alkalies to blue to green-blue solutions; and dye fibers of animal and Vegetable origin olive-green and green-grey to' blue greytints r 8. As, new products the inetalliferous azodyestuffs obtained by combining with diazocompounds containing lake-formihg groups in'ortho position to the diazo-group the 5 5',-

- dihydroxy 7 7"-disulfo 1 2 1' 2-dinaphthazine of the formula V and treating the products thus obtained an agent which yields metal, of the atomic iw'eight ranging vbetween 52 and 63.6, which products forrnjdark to blackish, powders which dissolve in water dilute alkalies to blue to green blue solutions, and dyefibe rs of animal and vegetable originsoliye-green r V and gre'engreyto blue grey'tintsh 7 7 As new products the metalliferouslazo dyestufls obtained by combining with ortho droxy 7 :7 disulfo 1:2: 1 2-dinaphthazine of the formula and treating the products thus obtained with an agent which yields copper, which products form dark to blackish powders which dissolve in water and dilute alkalies to blue to green-blue solutions, and dye fibers of animal and vegetable origin olive-green and green-grey to blue-grey tints. 11. Material dyed with the products of claim 6. V

12. Material dyed with the products of claim 7. V

13. Material dyed with the products of claim 8.

14. Material dyed with the products of claim 9.

15. Material dyed with the products of claim 10. In witness whereof we have hereunto signed our names this 14th day of August, 1929.

FRITZ STRAUB. WALTER ANDERAU. 

